New regression: vimeo ondemand

[anisse]

Since commit d8c507c (ping @remitamine ) there's a new regression for test VimeoOndemand (URL: https://vimeo.com/ondemand/20704). Output:

======================================================================
FAIL: test_VimeoOndemand (test.test_download.TestDownload)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/youtube-dl/test/test_download.py", line 199, in test_template
    format_bytes(got_fsize)))
  File "/youtube-dl/test/helper.py", line 236, in assertGreaterEqual
    self.assertTrue(got >= expected, msg)
nose.proxy.AssertionError: False is not true : Expected 105442900.mp4 to be at least 9.77KiB, but it's only 1.26KiB
-------------------- >> begin captured stdout << ---------------------
[vimeo:ondemand] 20704: Downloading webpage
[vimeo] 105442900: Downloading webpage
[vimeo] 105442900: Extracting information
[vimeo] 105442900: Downloading JSON metadata
[vimeo] 105442900: Downloading fastly_skyfire m3u8 information
[vimeo] 105442900: Downloading akfire_interconnect m3u8 information
[vimeo] 105442900: Downloading level3_skyfire_gce m3u8 information
[vimeo] 105442900: Downloading fastly_skyfire MPD information
[vimeo] 105442900: Downloading akfire_interconnect MPD information
[vimeo] 105442900: Downloading level3_skyfire_gce MPD information
[info] Writing video description metadata as JSON to: 105442900.info.json
[debug] Invoking downloader on 'https://05-lvl3-skyfire-gce.vimeocdn.com/1483970002-0561ab6f73839dddc41cb950d1ed03aec4ae279e/105442900/video/285405034,285405035,285405033/../'
[dashsegments] Total fragments: 1
[download] Destination: 105442900.mp4
[download] 100% of 1.26KiB in 00:00.14MiB/s ETA 00:00:00

--------------------- >> end captured stdout << ----------------------

File is now fetched in multiple fragments instead of one. The problem is the first fragment is only 1289 bytes.

Here are a few potential solutions:

• fix md5, add a file_minsize of 1200, and fix test/test_download.py to have max(expected_minsize, 1000) instead of 10000 (ping @dstftw )
• skip_download
• have the --test mode fetch and agregate files until it reaches minsize, put correct md5.